1 /*
   2  * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8026844
  27  * @summary Test repeating subtractExact
  28  * @library /testlibrary
  29  * @compile SubExactIRepeatTest.java Verify.java
  30  * @run main SubExactIRepeatTest
  31  *
  32  */
  33 
  34 import com.oracle.java.testlibrary.Utils;
  35 import java.util.Random;
  36 
  37 public class SubExactIRepeatTest {
  38     public static void main(String[] args) {
  39         runTest(new Verify.SubExactI());
  40     }
  41 
  42     public static int nonExact(int x, int y, Verify.BinaryMethod method) {
  43         int result = method.unchecked(x, y);
  44         result += method.unchecked(x, y);
  45         result += method.unchecked(x, y);
  46         result += method.unchecked(x, y);
  47         return result;
  48     }
  49 
  50     public static void runTest(Verify.BinaryMethod method) {
  51         Random rnd = Utils.getRandomInstance();
  52         for (int i = 0; i < 50000; ++i) {
  53             int x = Integer.MIN_VALUE + 10;
  54             int y = Integer.MAX_VALUE - 10 + rnd.nextInt(5);
  55 
  56             int c = rnd.nextInt() / 2;
  57             int d = rnd.nextInt() / 2;
  58 
  59             int a = catchingExact(x, y, method);
  60 
  61             if (a != 36) {
  62                 throw new RuntimeException("a != 36 : " + a);
  63             }
  64 
  65             int b = nonExact(c, d, method);
  66             int n = exact(c, d, method);
  67 
  68 
  69             if (n != b) {
  70                 throw new RuntimeException("n != b : " + n + " != " + b);
  71             }
  72         }
  73     }
  74 
  75     public static int exact(int x, int y, Verify.BinaryMethod method) {
  76         int result = 0;
  77         result += method.checkMethod(x, y);
  78         result += method.checkMethod(x, y);
  79         result += method.checkMethod(x, y);
  80         result += method.checkMethod(x, y);
  81         return result;
  82     }
  83 
  84     public static int catchingExact(int x, int y, Verify.BinaryMethod method) {
  85         int result = 0;
  86         try {
  87             result += 5;
  88             result = method.checkMethod(x, y);
  89         } catch (ArithmeticException e) {
  90             result += 1;
  91         }
  92         try {
  93             result += 6;
  94 
  95             result += method.checkMethod(x, y);
  96         } catch (ArithmeticException e) {
  97             result += 2;
  98         }
  99         try {
 100             result += 7;
 101             result += method.checkMethod(x, y);
 102         } catch (ArithmeticException e) {
 103             result += 3;
 104         }
 105         try {
 106             result += 8;
 107             result += method.checkMethod(x, y);
 108         } catch (ArithmeticException e) {
 109             result += 4;
 110         }
 111         return result;
 112     }
 113 }